How severe is CVE-2025-55657?

CVE-2025-55657 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-55657 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55657?

CVE-2025-55657 affects Gpac. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55657?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-55657 have an EU (EUVD) identifier?

Yes. CVE-2025-55657 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-210091.

When was CVE-2025-55657 published?

CVE-2025-55657 was published on 2026-06-09 and last updated on 2026-06-17.

CVE-2025-55657

CVE-2025-55657 is a high-severity vulnerability in Gpac with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-210091
Weakness: CWE-476
Affected product: Gpac
Published: 2026-06-09
Last modified: 2026-06-17

Description

A NULL pointer dereference in the gf_odf_vvc_cfg_write_bs function (odf/descriptors.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

Frequently asked questions

What is CVE-2025-55657?: A NULL pointer dereference in the gf_odf_vvc_cfg_write_bs function (odf/descriptors.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.
How severe is CVE-2025-55657?: CVE-2025-55657 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-55657 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55657?: CVE-2025-55657 affects Gpac. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55657?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-55657 have an EU (EUVD) identifier?: Yes. CVE-2025-55657 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-210091.
When was CVE-2025-55657 published?: CVE-2025-55657 was published on 2026-06-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gpac:gpac:2.4:*:*:*:*:*:*:*

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